Device to delay transmission of an indication of weft exhaustion



Aug. 23, 1927.-

A. A; GORDON 7 Filed Dec. 1 1925 DEVICE T0 DELAY TRANSMISSION OF ANINDICATION OF WEFT EXHAUSTION 2 She ets-Sheet 1 .zwmwm 4126025 00 1flrmin lf 1,639,845 Aug. 23, 1927. A. A. DON I DEVICE TODELAYTRANSMISSION OF AN INDICATION 0F WEFT EIXHAUSTION Filed Dec. 11,- 1925 I2 syn-sheet z 51- ",avwg 4L2 1518 Iwr/v 4/7. Gan-DON Patented Aug. 23,1927.

UNITED STATES PATENT oFF-Ice;

ALBERTA. eonnon, or woncns'rnn, ivrnssaonusnrrs; nssre non ro CROMPTON aI KNOWLES LOOM WORKS, 0F woR oEsTnR,M ssACHUSErTSJA oonrjonA'rroiv orMASSACHUSETTS.

DEVICE TO DELAY 'rnalvs vnssro v or AN 'InnIoA'i-Ion or WEZET-nxnausrrolvp Application filed. December 11, 1925. Serial). 14,8. p

This invention relates to automatic. weft replenishing box looms inwhich a weft detecting apparatus is operative to indicate substantialweft exhaustion in any one of theseveral shuttles used by the loom. i

" In a pick and pick loom, such indications may occur for differentshuttles upon two. Successive picks of the loom, but withv certain typesofweft replenishingmechanism it is not desirable that the indication. ofweft exhaustion in two different shuttles should be transmitted tothemagazine on two sucpessive picks or forward movements of the fly.

Accordingly, it is the general object of my invention to provide meansto delay the transmission of the second indication of weftexhaustionuntil'the second forward move.- mentv of the lay after theinitial indicat o occurs. In the attainment of this object, I provide a.device which renders thetransmitting mechanism inoperative for one pickafter each operation thereof.

My invention further rel-ates to. arrangements and combinations of partswhich will be hereinafter described and more partiCularly pointed out intheappended claims;

A preferred 'form of the invention is shown in the drawings in whichFig. 1 is a sectional side elevation of parts of a'loom, taken along theline 1-1 of Fig. 2;; Fig. 2 is a front view of certain. parts, takenalong the line 2-2 in Fig. 1;

' Fig. is anenlarged plan view of the de-' vice for delayingtransmission ofin'dication;

Fig. 4 is. a side elevation of theparts.

shown in Fig. 3. looking the arrow 4111 Fig. 3;

Figs. 5 and 6 ar'eviews similar to. Fig. 4 but showing the parts indiiferentpositions; and r a Fig. 7 is a detail sectional view, takenalong the line 7-7 in Fig. 3. V

Referring tothe, drawings, 1 haveshown aloom side 10 .a breast beam11,-a lay 12, and drop. boxes 13 containing a plurality of shuttles S.*I have alsoindicate'd a, rod or shaft :14whic'h extends across theloom. and is: connected-in the usual way to indicate weft exhaustion tothe magazine.

The parts thus far described the direction of are of the usual typeand'in themselves form no part devices for transmitting tlieindicationfrom the, weft detectoror detectorsto themagazine. I

The shaft'll is to be given an angular. m ve ent upon. ndi t n o W ft eer tion'and; for this purpose it is provided with; an arm 15 130 whichis pivoted a rod or blade he ea e fwhich ay e posi oned 19 to a camlever 20 provided with a cam roll;

21 engaging a double face cam22. The cam22 is mounted upon the usual camshaft or bottom shaft of the loom, which makes one revolution. for everytwo picks, of the loom. As the cam 22'is'double-acting, the lever 20 isoscillated on every pick ofthe loom and as the lever 20 moves rearward,the head 17 of the lever 18 moves forward. 1

If the blade 16 is in the path of the head 17 on such forward movement,the arm 15 and shaft 14 are rocked to indicate weft exhaustion to themagazine. A spring 2i thereafter yieldingly'returns the arm 15 and bladeL6 to rearward position.

Any usual weft. detecting mechanism may be uti zed or p a i g h lade 6 nth Pathofthe head Iba e. -W i Fig 3a-nd; 7, a lurality of plun'gers25,-having I bevelled en; 5 26 each adapted tojbe projected under. theblade 16, raising. the same into, the. pfl 'o t e he d Tbe he d sn s a2'5 iggf) to receive the bevelled rear end 28.0f-the b1ade1f6. I V

The plungers 25 may, be actuated by sep ar te. w ft et cto f my ua ype,mounted t w-operat t t e d f ren shuttle boxes. The number of plungersand de cto s-Wi l be ec ed to r sp nd with the. umber o d p b xes- Theparticular type ofweft detector forms 1m. part of my present inventionand is not illustratedin detailherein. as my invention relatesparticularly ,to. devices for delaying transmission of an indication ofweft exhaustion from the detecting mechanism to the ag zin I i T -.pngers. andl e uns pported 'in- -a*bracketor stand 30 preferably 7 upon aflatupper surface of the stand j30 when in its normal position. a Astud32 pro,-

' thereln. The 'cani jects laterally from the blade 16 and a latch orpawl 33 is pivoted at 34 on the side of the blade 16.

A cam plate 35 is mounted on studs 36 and 3'7 on 'the'side of'the' stand3 the stud 36 extending through a horizontal slot 38 in the plateandvthe stud 37 extending through plate 1" projection at its forwardend, a notch 41 W wardly 'Ihelola de' 16 hasa stud' 32 extend ng lathe ii to reeeivethe end' of'the aw-11 33 and an uphas a" stud a4 extendinlaterall o'veftne blade 16 (Fig. A portion of the pawl also extendsvlaterally as indicated at in ia, 3, 0 thatit at. ti ne iersase fi sideof the movable cam plate 35.

Having desc'ibed the details of construc* tion of my improved delayingdevice,- I will now describe the operation thereof.

The normal position of the parts is shown inFigL 4,"wit'h' the" rear end"28'oft'he'blade" 16 in its lower position, so that the head 17 willpass over the blade on its forward movement. Reference to Fig. 2 willshow 39 that the head 17 is offset at one side of the lever 18 to permitsuch movement.

its weft detector,it will raise the blade 16 to the position indicatedin Fig. 5, where 35 it will be engaged by the head 17 and will I beforced forward to the position indicated in Fig. 5, at the same timerocking the arm 15 and transmitting an indication of weft exhaustion tothe magazine; By this move- 40 ment, it will be seen that the-pawl 3-3is moved forward to. a position; wherdthe rearwardly extending end 'ofthe pawl can engage the notch 41 in the cam plate 35.

'As the arm 15'- and blade 16 are thereta afterinovearearward by thesprin'g'24 (Fig;

2), the pawl 33 will push the plate" 35 rearward and after a certainamount of rear ward'travel the movement of the blade '35 will beaccelerated by a spring 50 mounted so on a stud 51- secured to thebracket or stand "The forwardlyprojecting end 'ofthe 7 spring '50normallyrests;ender th plate indicatettir gs. soon as the cam plate hasmoved a-certain V V -A bears against the front and gives it a quickrearward movement to the position indioatedin Fig. 6.

'-"-,' ime-inclinedesist 3 -1 of the cam plate with its projection 40 toised nnder m r West-ad 32- 03 42113 bl3-d3 16, thus lifting the bladeto'theoperative popawl beingthereafter supported in the posiorwardly andiinwarclly inclined slot 39 ,7

35 has an" upward and 'rearwardly' extended: proj ection set ca in plate46 which is seeuitl out-1" which overlies the blade 16 If for any reasonthe pawl 33 is not promptly released from the notch 41 toward the end ofits rearward, the laterally projecting portion 45 of the pawl willenease he fi d m plate 46 saithwill nttm H lVith the blade 16 thus heldin raised position, as shown'in Fig. 6, it will be evimovement will passfreely under therear end 28 of the b ii i 7. p pluiigei magazine uponhat particular pick of the loom. This forward movement of the head" 1sev y a s, reset 9 Plate :35 by ear of tlie plate and forcing the platefrom tamper ative position shown" in Fig. 6'to the'nor-' mal inoperativeposition shown in Fig.4. .This restores'theblade 16 to its normal po-'sition and on the next pick an indication hau a d liarinain ns bXAY- i ustan ally dent-that the headil? ondts neat :ftmwardof'wefteiriraustioirmaybetransnn tted:

ertain types V exhausted shuttles may be presented to said I detectingmechanism on"successive picks' ofthe loom, the combination of means totrans "'lIllt an indication: of weft exhaustion "from the firstsubstantially exhausted shuttle,thus

presented to said detecting mechanism, and means to prevent transmissionof a second indication upon the next succeeding pick of the loom.

In a'weft replenishing pick and pick a .weft detecting mechanismhi-elnsubstanti lly the combination o flm'eans totransinit an indicationof-weft exhaustion from the; first substantially exhausted shuttle thusnsmittingi mechafer. a: SlR-Q l iDlQ-k nismineperative.

effect e operation thereof. f. an I b; ,1.

detecting mechanism,

es may be presented to said .fllechanisnr-on successive picks 'of' 1 ng,A 7 means to trans-' a ed ,7

initan indicationfof weft exhaustion there- 3 from, and means to rendersaid transmitting mechanism inoperative for a single pick after eacheffective operation thereof, said latter means comprising a regularlyoperated actuating member, a rock shaft to transmit indications to themagazine, an elementfor transmitting motion from said member to saidrock shaft, and means to move said element to an inoperative positionand to retain said element in such position for one pick immediatelysucceeding operation of said rock shaft.

4. The combination as set forth in claim 3, in which the latter meanscomprises a cam plate mounted upon fixed bearings and a pawl on saidtransmitting element effective to engage and move said cam plate to aposition to disable said element.

5. The combination as set forth in claim 3 in which the latter meanscomprises a cam plate mounted upon fixed bearings and a pawl on saidtransmitting element effective to engage and move said cam plate to aposition to disable said element, said cam plate having a rearwardlyprojecting portion engaged by said actuating member on its forwardmovement and being reset thereby.

6. In a weft replenishing loom having a weft detecting mechanism, meansto transmit an indication of weft exhaustion there from and means torender said transmitting means inoperative for a single pick after eacheffective operation thereof, said means including a regularly movedactuating mem ber, a transmitting element engaged thereby, said elementbeing normally in inoperative position but being movable to operativeposition by the weft detecting mechanism, and means becoming operableupon the first actuation of said element effective to move said elementto an inoperative position and out of control of said weft detectingmechanism.

7. In a weft replenishing loom having a weft detecting mechanism, meansto transmit an indication of weft exhaustion therefrom, and means torender said transmitting means inoperative for a single pick after eacheffective operation thereof, said means including a regularly movedactuating member, a transmitting blade selectively engaged thereby, acam plate efiective to move said blade to an inoperative position outofcon;. trol of the weft detecting mechanism, and a pawl on said bladeefiective to engage and move said cam plate on transmitting movement ofsaid blade.

8. In a weft replenishing pick and pick loom having a weft detectingmechanism and having means by which substantially exhausted shuttles maybe presented to said detecting mechanism on successive picks of the loomthe combination of means to transmit an indication of weft exhaustionfrom the first substantially exhausted shuttle thus presented to saiddetecting mechanism, and means to render said transmitting mechas nisminoperative on the next pick following such indication of weftexhaustion and to render said transmitting mechanism again operative onthe second pick following such indication of weft exhaustion.

In testimony whereof I have hereimto affixed my signature.

ALBERT A. GORDON.

